Contents

Examples

Alerts are available for any length of text, as well as an optional dismiss button. For proper styling, use one of the four required contextual classes (e.g., .alert-success). For inline dismissal, use the alerts jQuery plugin.

Conveying meaning to assistive technologies

Using color to add meaning only provides a visual indication, which will not be conveyed to users of assistive technologies – such as screen readers. Ensure that information denoted by the color is either obvious from the content itself (e.g. the visible text), or is included through alternative means, such as additional text hidden with the .sr-only class.

Link color

Use the .alert-link utility class to quickly provide matching colored links within any alert.

Additional content

Alerts can also contain additional HTML elements like headings and paragraphs.

Well done!

Aww yeah, you successfully read this important alert message. This example text is going to run a bit longer so that you can see how spacing within an alert works with this kind of content.

Whenever you need to, be sure to use margin utilities to keep things nice and tidy.

<divclass="alert alert-success"role="alert"><h4class="alert-heading">Well done!</h4><p>Aww yeah, you successfully read this important alert message. This example text is going to run a bit longer so that you can see how spacing within an alert works with this kind of content.</p><pclass="mb-0">Whenever you need to, be sure to use margin utilities to keep things nice and tidy.</p></div>

Dismissing

Be sure you’ve loaded the alert plugin, or the compiled Bootstrap JavaScript.

Add a dismiss button and the .alert-dismissible class, which adds extra padding to the right of the alert and positions the .close button.

On the dismiss button, add the data-dismiss="alert" attribute, which triggers the JavaScript functionality. Be sure to use the <button> element with it for proper behavior across all devices.

To animate alerts when dismissing them, be sure to add the .fade and .show classes.

You can see this in action with a live demo:

Holy guacamole! You should check in on some of those fields below.

<divclass="alert alert-warning alert-dismissible fade show"role="alert"><buttontype="button"class="close"data-dismiss="alert"aria-label="Close"><spanaria-hidden="true">&times;</span></button><strong>Holy guacamole!</strong> You should check in on some of those fields below.
</div>

JavaScript behavior

Triggers

Enable dismissal of an alert via JavaScript:

$(".alert").alert()

Or with data attributes on a button within the alert, as demonstrated above: